福建紫金山矿田金、银赋存状态及黄铁矿标型研究

发布时间：2019-02-23 21:56

【摘要】：福建紫金山铜金矿床、悦洋银多金属矿床和罗卜岭斑岩型矿床同属于与陆相火山岩相关的斑岩-浅成低温热液成矿系统。通过显微镜观察、电子探针成分分析、场发射扫描电子显微镜观测和矿石元素含量分析等综合研究方法,认为紫金山铜金矿床金的赋存状态除金矿石中自然金矿物外,金还赋存于铜矿石中硫砷铜矿、蓝辉铜矿、久辉铜矿和黄铁矿中,硫砷铜矿含金性最好,金含量最高达370μg/g;悦洋银多金属矿床银的赋存状态包括独立银矿物、亚显微银矿物和类质同象银,银的载体矿物有方铅矿、黄铁矿、黄铜矿等;黄铁矿是紫金山铜金矿床和悦洋银多金属矿床中共同存在的矿物,黄铁矿成分标型特征表明两处矿床的形成均与热液有关,与前人的研究结果一致。
[Abstract]:The Zijinshan copper-gold deposit, the Yueyang silver polymetallic deposit and the Lobuling porphyry deposit belong to the porphyry epithermal hydrothermal metallogenic system related to continental volcanic rocks. By means of microscope observation, electron probe composition analysis, field emission scanning electron microscope observation and ore element content analysis, it is considered that the occurrence of gold in Zijinshan copper gold deposit is in addition to natural gold in gold ore. Gold also occurs in copper ores, such as sulphoarsenite, blue chalcocite, chalcocite and pyrite, with the highest gold content of 370 渭 g / g. The occurrence states of silver in Yueyang silver polymetallic deposit include independent silver minerals, submicroscopic silver minerals and similar silver, and silver carrier minerals such as galena, pyrite, chalcopyrite and so on. Pyrite is a common mineral in Zijinshan copper-gold deposit and Yueyang silver polymetallic deposit. The typomorphic characteristics of pyrite composition indicate that the formation of the two deposits is related to hydrothermal solution, which is consistent with previous studies.
【作者单位】：中国地质大学(北京)地球科学与资源学院;河南省岩石矿物测试中心;中国地质科学院地球物理地球化学勘查研究所;
【基金】：国家自然科学基金项目(41273063,41573037,41203038) 中国地质调查局地质调查项目(1212011120206) 国土资源部行业专项(201311169-3) 中国地质大学(北京)大学生创新实验项目(2013AB010)
【分类号】：P618.5

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